JAPANESE
Nippon/Nihon- Japan (country)
Nipponjin/Nihonjin- Japanese (people)
Nippongo/Nihongo- Japanese (language)

"Oke desu ka?" ("OK?")
CONCERNING COUNTRIES:

(Country) + go = the language (doesn't apply to Amerika)

(Country) + jin = the people

(Country) + sei = made in (Country)

Countries:

Amerika = America    Nippon (or Nihon) = Japan

Igirisu = England    Furansu = France

Doitsu = Germany    Supein = Spain

Airurando = Ireland    Chuugoku = China

Choosen = Korea    Osutoraria = Australia

Other Stuff you should know:

The Japanese word for the English language is "Eigo."

The Japanese word for American English is "Beigo."
COOL PROVERBS:

"Saru mo ki kara ochiru."
("Even monkeys fall out of trees.")

"Gou ni itte wa, gou ni shitagae."
("Obey the customs of the land.")

Egao wa ikiru enerugi.
("Your smile is your life force.")

Nana korobi, ya oki.
("Fall down seven times, get up eight.")

Bushi wa kuwanedo taka-yoji.
("A samurai, even when he has not eaten, uses his toothpick.")

I found these proverbs at Freedict.com, www.oocities.org/Area51/Underworld/1701/sengoku_proverbs.htm, www.japanippon.com, and I've also seen some of these on websites I can't remember the names/URLs of.

Gigaku ga suki desu! :D